Abstract
Pesticides are pollutants found in wastewater due to increasing agricultural activities over the years. Inappropriate dosing of pesticides results in the dispersal of active ingredients in the environment. The complete removal of pesticides from wastewater is an immediate concern due to their high toxicity and mobility. At present, adsorption is one of the most widely used methods for pesticide removal, in which synthetic zeolites and mesoporous silica materials are extensively applied. This article presents a systematic and comparative review of the applications and comparison of these adsorbents, based on the data reported in the literature. The paper summarizes the information collected from various studies, including the type of adsorbents and pesticides used, experimental conditions, and results of each work. The studies analyzed were laboratory-based and show potential advantages for the treatment of pesticide-bearing waters using functionalized and unfunctionalized synthetic zeolites and mesoporous silica materials. As a whole, functionalized materials are reported to exhibit better removal performance for different pesticides than conventional materials. It is expected that the results of this review will help researchers to establish a powerful strategy for the abatement of pesticides in wastewater.
Highlights
José Rodríguez-MirasolSince the latter half of the nineteenth century, extensive agricultural use of plant protection products, which are referred to as “pesticides”, has been observed to pose a serious impact on soil, air, and water
Within approximately 2 h, more than 50% of DDT was removed, while the equilibrium time was achieved within 6 h for Santa Barbara Amorphous (SBA)-15, 16 h for MCM48, and 34 h for Mobil Composition of Matter (MCM)-41 and HMS
Mesoporous silica materials and synthetic zeolites are effective for a broad range of pesticides
Summary
José Rodríguez-MirasolSince the latter half of the nineteenth century, extensive agricultural use of plant protection products, which are referred to as “pesticides” (used in this paper), has been observed to pose a serious impact on soil, air, and water. The global demand for increased food production has led to significant deterioration of food quality, resulting in severe consequences on the environment and caused public health issues due to overuse or misuse of pesticides [2,3]. It is assessed that more than 20% of the pesticides reach their nontarget species, as well as air, water, and soil [4]. Traces of these products are commonly detected in surface water, and more importantly, groundwater—a major source of drinking water on the world [5]. The presence of many types of pesticides and their derivatives in water is of great concern to the public and authorities, due to increased undesirable health effects resulted in the exposition on pesticides even at very low concentrations (pg/L to ng/L) [6]
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